/// <summary>
/// Retrieves a joint location for a particular timestamp; in joint-local coordinates
/// </summary>
public SSSkeletalJointLocation computeJointFrame(int jointIdx, float t)
{
int leftFrameIdx = (int)(t / frameDuration);
SSSkeletalJointLocation leftJointFrame = _frames [leftFrameIdx] [jointIdx];
float remainder = t - ((float)leftFrameIdx * frameDuration);
if (remainder == 0)
{
return(leftJointFrame);
}
else
{
SSSkeletalJointLocation rightJointFrame = _frames [leftFrameIdx + 1] [jointIdx];
return(SSSkeletalJointLocation.interpolate(
leftJointFrame, rightJointFrame, remainder / frameDuration));
}
}
public SSSkeletalJointLocation computeJointFrame(int jointIdx)
{
if (_currAnimation != null)
{
var loc = _currAnimation.computeJointFrame(jointIdx, _currT);
if (_prevAnimation == null)
{
//GL.Color3 (1f, 0f, 0f);
return(loc);
}
else
{
var prevTime = Math.Min(_prevT, _prevAnimation.totalDuration);
var prevLoc = _prevAnimation.computeJointFrame(jointIdx, prevTime);
#if PREV_PREV_FADE
if (_prevPrevAnimation != null)
{
var prevPrevLoc = _prevPrevAnimation.ComputeJointFrame(jointIdx, _prevPrevT);
var prevFade = _prevT / _prevTransitionTime;
prevLoc = SSSkeletalJointLocation.Interpolate(prevPrevLoc, prevLoc, prevFade);
}
#endif
var fadeInRatio = _currT / _transitionTime;
GL.Color3(fadeInRatio, 1f - fadeInRatio, 0);
return(SSSkeletalJointLocation.interpolate(prevLoc, loc, fadeInRatio));
}
}
else if (_prevAnimation != null)
{
//GL.Color3 (0f, 1f, 0f);
return(_prevAnimation.computeJointFrame(jointIdx, _prevT));
}
else
{
var errMsg = "Attempting to compute a joint frame location from an inactive channel.";
System.Console.WriteLine(errMsg);
throw new Exception(errMsg);
}
}
private SSSkeletalJointLocation _computeJointLocWithControllers(
SSSkeletalJointRuntime joint, List <SSSkeletalChannelController> controllers, int controllerIdx)
{
var channel = controllers [controllerIdx];
if (channel.isActive(joint))
{
var channelLoc = channel.computeJointLocation(joint);
if (joint.parent != null)
{
channelLoc.applyPrecedingTransform(joint.parent.currentLocation);
}
if (!channel.interChannelFade ||
channel.interChannelFadeIndentisy() >= 1f ||
controllerIdx == 0)
{
return(channelLoc);
}
else
{
var fallbackLoc
= _computeJointLocWithControllers(joint, controllers, controllerIdx - 1);
return(SSSkeletalJointLocation.interpolate(
fallbackLoc, channelLoc, channel.interChannelFadeIndentisy()));
}
}
else
{
if (controllerIdx > 0)
{
return(_computeJointLocWithControllers(joint, controllers, controllerIdx - 1));
}
else
{
throw new Exception("fell through without an active skeletal channel controller");
}
}
}